296 FIFTH REPORT OF THE ENTOMOLOGICAL COMMISSION. 
32. Scolytus sp. (probably undescribed). 
Dr. Hamilton states (Can. Ent. xvii, 1885, p. 48) that Scolytus rugula- 
tus breeds in hickory twigs, but Mr. Sohwarz (Proc. Ent. Soc. Wash- 
ington, i, No. 1, 30,) maintains that this species differs from S. rugulo8Us y 
and is apparently undescribed. (J. B. Smith, Ent. Amer. ii, 127, 1886.) 
33. Sinojrylon basilare (Say). 
Order Coleopteha ; family PTiNiDiE. 
This beetle in its larval state inhabits hickory wood, in which it 
bores to a considerable depth, preferring the hard central wood. Its 
borings are very fine, and firmly compressed. After full development 
is attained it makes its way out almost at a right angle and emerges 
through a circular opening in the bark of the hickory. (Horn.) 
Fig. 119.— Apate ba- 
tillaris, Smith 
and Marx del. 
34. Red-shouldered apate. 
Apate ba8illari8 (Say). 
Order Coleoptera ; family Scolytid^e. 
Boring deep, small straight holes to the heart of the tree, which 
is entirely killed by this iasect, and transforming at the bottom of 
the hole. 
The beetle. — Deep black, and punctured all over; thorax very 
convex and rough in front; the wing-covers not excavated at the 
tip, but sloping downward very suddenly behind, as if obliquely 
cut off, the outer edge of the cut portion armed with three little 
teeth on each wing-cover, and on the base or shoulders a large red. 
spot 0.20 inch in length. (Harris.) 
35. The hickory bark-borer. 
Chrame8U8 icorice Leconte. 
This bark-borer has beeu bred from the branches and twigs of the 
hickory by Dr. Le Conte. The genus belongs to a group of Scoly tidae 
well defined by the club of the antennae being large, strongly compressed, 
pubescent, and sensitive, the antennae themselves being inserted as 
usual at the sides of the front. The tibiae are broad, obliquely rounded 
at the end, and fiuely serrate. Chramesus, says Le Conte, differs from 
Polygraphus in the eyes not being completely divided ; they are slightly 
emarginate, the funicle being attached at the side of the club, the 
outer joints being slender. Two species (one not mentioned in Le 
Conte and Horn's work on " Coleoptera of North America ") live on 
the species of Carya. 
Prof. Johp B. Smith (Eut. Amer. vi, 53) gives an account of the 
habits of this Scolytid beetle, with a figure of the mine and of the mouth- 
parts of the larva, which is also described in full. 
